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Multiple Jobs & Side-Income Calculator

PAYE applies the student loan threshold to each employer's pay separately. Self Assessment applies one threshold to everything you earned. Put your jobs and side income in and see the gap, using HMRC's 2026-27 thresholds.

None of your jobs triggers a PAYE deduction, but your total income does

Each employer sees only what it pays you, and each of yours is below the £2,448 monthly threshold. Your combined income of £38,000 is above the annual threshold of £29,385.

Amount due: £775 for the year (£65 a month), payable through Self Assessment by 31 January after the end of the tax year.

PAYE vs Self Assessment

Two jobs at different employers each get the full threshold. Two jobs at the same employer share one. Give sources the same employer name and this calculator aggregates them the way payroll does.

England 2012–2023; Wales from 2012

6% above £21,000 a year, stacked on top of the undergraduate deduction at every employer.

If you do not file yet, non-PAYE income or an underpayment may mean you have to start.

Income sources

£

£1,500.00 a month against a £2,448 threshold

Sources with the same employer name share one threshold.

PAYE deductions apply

£

£1,250.00 a month against a £2,448 threshold

Sources with the same employer name share one threshold.

PAYE deductions apply

£

No PAYE — settled through Self Assessment

Thresholds used (2026-27)

Annual: £29,385

Monthly: £2,448

Weekly: £565

Rate: 9% of everything above the threshold

HMRC publishes and floors the monthly and weekly figures rather than dividing the annual one[source].

PAYE vs your true liability, 2026-27

Total income

£38,000

2 PAYE sources plus non-PAYE income

PAYE collects

£0

Summed across every employer

True liability

£775

One £29,385 threshold on the total

Still to pay

£775

Due 31 January via Self Assessment

How this is worked out

(£38,000 − £29,385) × 9% = £775

Plan 2 liability on your combined income for 2026-27, rounded down to a whole pound. This is the figure Self Assessment works to.

How this is worked out

£775 − £0 = £775

True liability less what PAYE already collected: the balancing payment.

What each source has deducted

Student loan deducted from each income source, 2026-27
SourceAnnual incomeDeducted a year
Job 1Employer A£18,000£0
Job 2Employer B£15,000£0
Side incomeNo PAYE£5,000£0
Total£38,000£0

£775 to pay through Self Assessment

Due by 31 January following the end of the tax year. There are no payments on account for student loan repayments, so the whole amount falls in one instalment. Setting aside £65 a month covers it, or you can make voluntary payments to the Student Loans Company through the year instead.

Do you need to file Self Assessment?

  • • You have income that is not taxed through PAYE.
  • • Your PAYE deductions fall £775 short of your liability.
  • • You do not currently file, so you may need to register with HMRC.
  • • Register by 5 October following the end of the tax year.
Rates, assumptions and sources
Last reviewed: · Verified against gov.uk and SLC published figures

Every figure below is the 2026-27 published figure, read from this site's single source of truth at page-render time[source]. The 6% Plan 2 and Postgraduate interest cap covers the 2026/27 year only and is not assumed to continue[source].

Repayment threshold, rate, interest, write-off period and threshold freeze status by student loan plan, 2026-27
PlanThresholdRateInterestWritten offThreshold freeze
Plan 2£29,385[source]9%4.1% to 7.1% by income, capped at 6% for 2026-27[source]30 years[source]Frozen at £29,385 until April 2030

Write-off is counted from the April after the course ends, not from the course-end date itself, and the Plan 2 interest bands (£29,385 lower, £52,885 upper) are frozen alongside the Plan 2 repayment threshold.

This calculator also assumes

Tax year
2026-27
PAYE model
One threshold per employer, per pay period
Same employer
Sources sharing an employer name share one threshold
Loan deduction rounding
Rounded down to a whole pound each period
Assumed pay pattern
Level pay every period, no bonus or overtime
Not modelled
Income tax and National Insurance across jobs

Growth, inflation and long-run interest figures are assumptions, not published rates. Change them and the projection changes.

Understanding multiple jobs and student loan repayments

How PAYE works

  • • Each employer applies the threshold to its own pay only
  • • A job below £2,448 a month deducts nothing
  • • Employers cannot see each other's payroll
  • • Two jobs at the same employer DO share one threshold
  • • Weekly payrolls use the £565 weekly threshold

What Self Assessment does

  • • Adds every source together
  • • Applies one £29,385 threshold to the total
  • • Credits the student loan already deducted through PAYE
  • • Charges the difference by 31 January
  • • No payments on account for student loan repayments

Worked examples

Two £18,000 jobs at different employers, Plan 2

• Each pays £1,500.00 a month, below the £2,448 threshold, so PAYE deducts nothing.

• Self Assessment charges £595 on the combined £36,000.

The same two jobs at the same employer

• Payroll aggregates them to £3,000.00 a month and deducts £49 a month, which is £588 a year.

• Almost nothing is left for Self Assessment to collect.

Related tools

Need help with multiple income sources?

Voluntary payments to the Student Loans Company through the year avoid a single large bill in January.

What you pay on your student loanSelf Assessment tax returns

Related student loan calculators

The multiple jobs and side income calculator answers one specific question. For the full picture, start with our UK student loan calculator on the homepage, work out what leaves your payslip each month with the monthly repayment calculator, or check what you can borrow with the student finance calculator. Every tool on the site is listed in the UK student loan calculator directory.